45deg helix on spiral/end mills?
Just musing around here –
I was curious if anyone has tried higher helix angles (45 degrees) on router bits for more controled removal and less tearout. I’d like to try it with finger joints on plywood.
A tangent question is: has anyone found a 1/2″ spiral or end mill with an overall length of less than 3″? I’m not doing any deep plunge work and I find having all that extra length sticking out of the collet to be excessive and uncomfortable. (using old standard 1.5hp Porter Cable)
Cheers!
Replies
Try this link:
http://www.onsrud.com/home
Frosty
"I sometimes think we consider the good fortune of the early bird and overlook the bad fortune of the early worm." FDR - 1922
thanks - didn't see anything there in a 1/2" bit with an overall length shorter than 3". If I get serious, guess a shop can always cut one down for me.
High helix cutters are more prone to chatter. You'll have to limit your cut depth and rpm to use them safely in a router. My experience is that you're headed in the wrong direction with this one. I'd say more about what I've learned about using end mills in wood but my experience is with a milling machine and wouldn't translate all that well to a router. I don't want to contribute to an injury just by thinking end mills perform the same in routers as they do in milling machines. I would suggest, at least, a variable speed router when considering end mills.
Edited 9/8/2007 1:55 pm by lwilliams
thanks LW, maybe more sheer angle is too much of a good thing then - maybe the bottom of the bit would be too grabby or aggressive.
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